davy
Preserved but no longer current.
"on my DAVY," on my affidavit, of which it is a vulgar corruption. Latterly DAVY has become synonymous in street language with the name of the Deity; "so help me DAVY," generally rendered, "swelp my DAVY." Slang version of the conclusion of the oath usually exacted of witnesses.
Era: ca. 1874 (Victorian)
Sources & notes
Historical definition reproduced from Hotten’s The Slang Dictionary (1874, public domain; Project Gutenberg #42108, retrieved 2026-07-31). Reflects the attitudes of its era.
Common questions
What does “davy” mean?
"on my DAVY," on my affidavit, of which it is a vulgar corruption. Latterly DAVY has become synonymous in street language with the name of the Deity; "so help me DAVY," generally rendered, "swelp my DAVY." Slang version of the conclusion of the oath usually exacted of witnesses.
Is “davy” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.